<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef-1.bbci.co.uk/news/ws/560/amz/worldservice/live/assets/images/2015/11/30/151130075212__86945672_eiffel.png>
<http://www.bbc.com/mundo/noticias/2015/11/151129_cumbre_paris_cop21_guia_az>